doherty



(No Model.)

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No. 537,278. Patented Apr. 9, 1895.

WIJTIVESSES A gfzfw (No Model.) 5 Sheets-Sheet}.

J. A. DOHB-RTY.

STREET SWBBPER.

No. 537,278. Patente dApr. 9,1895.

WITNESSES 1N VENT 0R m: Noam Firms co. PHGTG-LITHCL, WASHINGTON, n. c.

(No Model.) 5 Sheets-Sheet 4.

- J.- A. DOHERTY. STREET 'SWBEPBR.

No. 537,278. I Patented-Apr 9, 1895.

WITNESSES IN VENT 0R ms PETERS 00.. wmaurua, WASHINGYON. n. c.

' (No Model.) 5Sheets-'-She'et 5.

J.A'.D0 HERTY,

STREET SWEEPER- No. 537,278. Patented Apr. 9, 1895..

kllllllllllllfll I H WITNESSES INVENTOR UNITED STATES PATENT OFFICE.

JOHN A. DOHERTY, on NEW YORK, N. Y.

STREET-SWEEPER.

SPECIFICATION forming part of Letters Patent No. 537,278, dated April 9,1895.

Appli ion filed September 24, 1 8 91. 1 Ben ewed January 22, 1 8 9 5.Serial No. 5 3 5,8 2 Z. (No model.)

To all whom it may concern:

Be it known that I, JOHN A. DOHERTY, a

citizen of the United States, residing in the city, county, and State ofNew York, have invented new and useful Improvements in Street-SweepingMachines, of which the following is a specification. This inventionrelates to improvements in street sweeping machines consisting of anadjustable bucket to receive and hold the sweepings delivered thereto bythe usual revolving broom, and a suspended box into which the sweepingsare tobe deposited from time to time from this adjustable bucket, andwhen a sufficient quantity of sweepings shall have been deposited insaid box, the whole may be deposited in separate masses therefrom to besubsequently removed in any convenient manner.

Figure 1 represents a side elevation of'this machine completec Fig. 2 isa plan or top view of Fig. 1. Fig. 8 is a central, longitudinal sectionof Fig. 1, showing the different positions of the bucket to receive anddischarge the sweepings delivered thereto by the revolving broom. Fig. 4is a similar View to Fig. 3, showing the suspended box into which thesweepings are to be deposited from the bucket in position to dischargeits contents in a mass in one place; Fig. 5, a transverse, sectionalview through the line m, w, of Fig. 1, to show more clearly the mannerof suspending the bucket, the other parts of the I machine, notnecessary thereto being omitted.

Similarletters of reference indicate corresponding parts throughout theseveral figures.

The accompanying drawings represent my invention as applied to anordinary two wheel sweeper, though it is evident that it would beequally well adapted to a three or four wheel sweeper.

A, in the accompanying drawings is the frame of an ordinary sweepingmachine with two wheels and designed to be drawn by one animal, upon theaxle B, of which is suspended an oscillating, adjustable box 0, toreceive and contain the sweepings from an adjustable bucket D, from timeto time until a sufficient quantity shall have been collected anddeposited therein,,and subsequently to discharge the mass therefrom inone place by turning. the box on its axis to the position shown in Fig.4. At the rear end of this sweeper is arranged the usual revolving broomE, adjustable and driven by an endless chain F, from a pulley G, securedto the axle B, and a corresponding pulley H, mounted upon the outer endof the shaft of the broom as shown in elevation Fig. 1 and plan Fig. 2.Directly in front of this revolving broom E, and at the proper distancetherefrom is suspendedan adjustable bucket D, extending crosswise and,somewhat longer than the broom E, in order to receive all the sweep ingsdelivered thereto by the broom. This bucket D, is suspended by chains(1. passing over a roller I, mounted upon the frame A, in suitablebearings, over which roller these chains are to be drawn by a chain 1),extending to and connected with a Windlass J, to raise and tilt thebucket to deliver its contents into the box 0, of the sweeper as shownin dotted lines Fig. 3, and to be again lowered in position to receivethe sweepings from the broom in same figure. To limit the up and downmovements of this bucket D, slotted guides K, are provided and securedto the frame A, into the slots of which guides the ends of the rod d,extend and to which rod the bucket D is secured. When this bucket D, islowered and in -position to receive the sweepings from the broom, theends of the rod d, rest in the'lower ends of the slotsf, and when thebucket is drawn to its extreme upward movement the rod cl, will bearrested at the upper ends of the slots and the bucket tilted so as todeliver its contents into the box a, over its rear edge as shown indotted lines Fig. 3.

As a convenient and practicable means of raising and loweringthe bucketD, when required, a Windlass J, with hand-wheel d, is provided andplaced near the drivers seat, which Windlass is connected with thebucket by means of the chains b, a, so. that by turning this hand-wheeld, backward and forward the bucket D, may be raised and tilted todischarge the contents therefrom, and lowered to position to receive thesweepings as shown in Fig. 3. It will be observed that when the bucketD, shall have been elevated by means of the hand-wheel d, and chains 19,a, to the required height, the guides K, will arrest its further upwardmovement, and then by continuing to turn the hand-wheel d, the bucketwill be tilted backward with its rear edge extending over the edge ofthe box 0, to deposit its contents therein as before stated, andrepresented in dotted lines Fig.

The chains (1, by which the bucket is suspended and by which it is to beraised and lowered are attached thereto in front of the guide-rod (Z, asufiicient distance to tilt the bucket at its extreme upward movement,and to maintain the bucket in a horizontal position while being raisedand lowered, the preponderance of weight being in front of thesuspension chains.

In order to maintain the front edge of the bucket D, in proper positionsteadily, and independent of the suspension chains a, while receivingthe sweepings from the broom, stops it, are secured to its lower sidewhich bear against the guides K, as shown in Figs. 1, 3 and 4. By thisarrangement of stops, the bucket may be lowered and its front edgemaintained in a fixed position to receive the sweepings thereinindependent of any exact movement of the hand-wheel d, of the Windlasswhich would be difficult in the absence of these stops. It will also beobserved that this bucket is practically pivoted so as to pass overobstructions and to return by its own gravity in position to receive thesweepings, the guide-rod d, being the pivot, and the stops 71, togetherwith this guide-rod to maintain it horizontally as shown.

As a convenient means for raising and lowering the revolving broom E, alever L, mounted upon uprights M, secured to the frame A, is provided,to the rear end of which are attached the chains S, and by which thisbroom is also suspended in the usual manner, the opposite end of thislever extending for ward toward the front of the sweeper to be operatedby the attendant as shown in Figs. 1, 2, 3, and et.

In constructing and arranging the box C,

' it should be suspended upon the axle B, so

that the front side thereof shall be heavier than that in rear of theaxle in order to maintain itself in position when empty, and not to turnbackward upon the axle of its own weight. To maintain this oscillatingbox 0,

in position whether loaded or unloaded, a stop-bar Z, is provided whichis supported in bearings m, secured to the frame A, of the sweeper andagainst which bar a stop V, se-

cured to the box 0, bears as represented in the several figures. Whenthe load ofsweepings in the boxis to be deposited in one place, thestopbar Z, is withdrawn and the box permitted to turn on its axis to theposition shown in Fig. 4, and when empty may again be returned in placeand locked to receive the sweepings as before stated. As soon as thesweepings are received from the broom, by the bucket, raised anddischarged therefrom into the box in sufficient quantity they are inturn discharged from the box in masses at different places the same asthey would be gathered by handbrooms from windrows left by sweepers notprovided with my improvements; and so on the operation mayberepeated-the bucket to continue to receive, elevate and discharge itscontents into the box and subsequently deposited therefrom atintervals,in different places as before stated.

Having thus fully described my invention, what I claim therein as new,and desire to secure by Letters Patent, is

1. In a street sweeping machine the combination with an oscillating boxto receive and deposit the sweepings therefrom at intervals, of a bucketsuspended and capable of being raised and tilted to discharge thesweepings therefrom into said oscillating box, the guides by which theup and down movements of said bucket are governed and limited, thesuspension chains by which said bucket is to be raised, and lowered toreceive the sweepings being in front of said guides, whereby said bucketis maintained in a horizontal position while being raised and loweredsubstantially as herein set forth and shown.

2. In a street sweeping machine provided with a bucket suspended andcapable of being raised and tilted to discharge the sweepings therefrom,and lowered to a fixed position to receive the sweepings, the guides bywhich the up and down movements of said bucket are governed and limited,and stops secured to said bucket in front of said guides whereby thebucket is maintained in position while receiving the sweepingsindependent of the suspension chains substantially as and for thepurpose set forth.

JNO. A. DOHERTY.

Vitnesses:

ALBERT MERIAN, S. WV. WOOD.

